Wasn't this one of the crazytown spells in Sealed?

Yeah. Jesus recommended we drop the body to a 3/3, but I strongly suspect the problem is the two tokens.

I think you might be better off going back to two tokens but giving it an intervening if-clause:

"Whenever a spell is played during combat, if CARDNAME is attacking, put two 1/1 colorless Thopter artifact creature tokens with flying onto the battlefield."

That way you'd ensure that the controlling player can't just chill and let this guy and his thopters hang back and churn out more thopters. Plus it would make a little more sense in terms of flavor, as the scout/reporter is presumably a war-time journalist. It'd be a little more comparable to Sharding Sphinx in that regard as well.

In any other set, I'd say that was probably the right call, but we're dealing with Feint here.

Say I'm attacking with the Thoptigraph Reporter and you choose not to block it. I decide to Feint in a spell using the Reporter as the carrier for it. Now he's removed from combat when the spell is cast, but he's no longer attacking, so the ability doesn't trigger. Big bummer, especially after all that setup.

But the beauty of having the scouts anchored in white and green is that green has a bunch of feint cards, and feint cards encourage you to attack with anything you've got available. So really, if you've built your deck to work with this guy, he's probably attacking at least once. I faced him in testing, and at 4/4, he was worth attacking with every time.

So the concern that he'll sit back and watch while his flying monkeys do his bidding isn't really the part that worries me, it's that he gets so damn many of them so quickly.

I can see your point; in my head, what you're describing is why my suggestion made sense, as the controlling player is first forced to put the Reporter into the fray, and secondly, you can only take advantage of the token production by leaving it in battle. But you're right, players will undoubtedly be overeager to use their unblocked Reporter as a Feint and then feel betrayed when the trigger no longer functions.

Without playtesting of my own, I can't really gauge why this would be significantly more dangerous than the aforementioned Sphinx (or in the realm of Hero of Bladehold), though it is abundantly obvious that the removal in Soradyne is like 30 notches below that of Shards. Of course, Shards had some of the most hyper-efficient removal the game has over seen, with Path to Exile, Terminate, Maelstrom Pulse, and Agony Warp all seeing significant cross-format play.